All limit switches on one input with bl-mach3 bob

Update:
I've tried that but it didn't work. Signal was always true. I've gave up with that board. I had also Hy-jk02-m at home, so I've connected this one instead. No issues with this board. I've connected limits same way and It works. The only change is inverting input pin. I haven't got time testing homing yet, probably later today will do it. Thank you very much for all advices, hopefully homing will be OK 

Have you connected 12-24v? to the bob as it requires both 5V + 12-24v

I've powered bl-mach bob with usb only. It works OK without any other power supply. I even done a test cut with it. So I believe 12-24v are for spindle. For spindle I'm using modbus so I could skip that. 
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Homing is still don't working. During homing x axis joint 1 and 2 limit switch are triggered.
HOME_IGNORE_LIMITS = YES
HOME_IS_SHARED = 1
Is set on all 3 axis, but it doesn't seems to work.

I say again the board needs 12-24v for the inputs to function 

I've changed Bob yesterday to hy-jk02-m. With this one I don't have that kind of issues.
How can I ignore other switches during homing?

Your other board requires the 12v-24v connection for the spindle output AND the inputs to function. The inputs are run through 12v isolation chips, and the inputs will not work without the aux 12v power supplied.

The input terminals will float at around 11v when the 12v-24v power supply is connected to the board. They are switched by being pulled low by connecting the input terminal to the 0v ground reference of the 12v-24v power supply.

The outputs (except for the 0-10v analog spindle output) are all 5v and only require the 5v supplied by the USB plug or one of the 5v terminal connections.

Lpkkk wrote:

I've changed Bob yesterday to hy-jk02-m. With this one I don't have that kind of issues.
How can I ignore other switches during homing?
 

To Ignore the limit switches during homing you have to add the following line to each of the [JOINT_N] sections in your config's ini file.

You may also need this line (or change the value from 0 to 1)

Thank you for your explanation Todd. Now it is clear to me.

I've already wrote :

Homing is still don't working. During homing x axis joint 1 and 2 limit switch are triggered.
HOME_IGNORE_LIMITS = YES
HOME_IS_SHARED = 1
Is set on all 3 axis, but it doesn't seems to work.

So I've added mentioned by you but it didn't work.

Just a guess, but changes made to the configs ini or hal files are not live. They are only read when first starting a Linuxcnc configuration. In other words you must restart Linuxcnc for changes made to the ini or hal files to take effect

When you toggle one of the home switches, can you see the input value change in Linuxcnc using either Halmeter or the watch screen in Halshow?

When none of the joints are triggering the home switch is the value of parport.0.pin-15-in "true" or "false" in Halmeter?

If "parport.0.pin-15-in" has the value of "true" when none of the joints are against or triggering the home switches, then you will need to invert that signal by using the pin "parport.0.pin-15-in-not" instead of "parport.0.pin-15-in" in your hal file.